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Effects of Surgical Masks on Cardiopulmonary Function in Healthy Subjects
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Head elevation and lateral head rotation effect on facemask ventilation efficiency: Randomized crossover trials.

Sayuri Matsunami1, Nobuyasu Komasawa1, Yuki Konishi1

  • 1Department of Anesthesiology, Osaka Medical College, Osaka, Japan.

The American Journal of Emergency Medicine
|May 14, 2017
PubMed
Summary
This summary is machine-generated.

Head elevation with a higher pillow significantly improved facemask ventilation volume. Lateral head rotation did not improve ventilation volume in patients undergoing general anesthesia.

Keywords:
Facemask ventilation volumeHead elevationLateral head rotationRandomized clinical trial

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Area of Science:

  • Anesthesiology
  • Respiratory Physiology

Background:

  • Effective facemask ventilation is crucial for patients undergoing general anesthesia.
  • Optimizing ventilation techniques can improve patient outcomes and reduce complications.

Purpose of the Study:

  • To evaluate the impact of head elevation and lateral head rotation on facemask ventilation volume.
  • To determine the optimal head positioning for enhanced facemask ventilation.

Main Methods:

  • Two prospective randomized crossover trials were conducted.
  • Facemask ventilation was assessed with different head elevations (high vs. low pillow) and lateral head rotation.
  • Ventilation volume was measured using pressure-controlled ventilation at varying inspiratory pressures.

Main Results:

  • Head elevation with a 12-cm pillow significantly increased ventilation volume compared to a 4-cm pillow at 15 and 20 cmH2O.
  • Lateral head rotation did not significantly alter facemask ventilation volume at any tested inspiratory pressure.

Conclusions:

  • Head elevation is an effective method to increase facemask ventilation volume in patients with normal airways.
  • Lateral head rotation does not appear to enhance facemask ventilation volume.